CA1297867C - Arrangement for supporting of a shank of a drilling machine - Google Patents
Arrangement for supporting of a shank of a drilling machineInfo
- Publication number
- CA1297867C CA1297867C CA000535680A CA535680A CA1297867C CA 1297867 C CA1297867 C CA 1297867C CA 000535680 A CA000535680 A CA 000535680A CA 535680 A CA535680 A CA 535680A CA 1297867 C CA1297867 C CA 1297867C
- Authority
- CA
- Canada
- Prior art keywords
- shank
- carriage
- supporting housing
- supporting
- drilling machine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 23
- 238000009527 percussion Methods 0.000 claims abstract description 19
- 238000011010 flushing procedure Methods 0.000 claims description 6
- 239000007788 liquid Substances 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/24—Guiding or centralising devices for drilling rods or pipes
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B6/00—Drives for drilling with combined rotary and percussive action
Abstract
ABSTRACT OF THE DISCLOSURE
An arrangement for mounting and supporting of a shank of a drilling machine comprising a body supported by a carriage, a percussion means mounted in the body, and supporting housing positioned at a front side of the body, and a shank piece mounted in the supporting housing as an axial extension of the percussion means. In order to reduce the strains exerted on tie rods of the body of the drilling machine, the supporting housing of the shank is supported at least partly by the carriage separately from a support between the body and the carriage so that the sideward forces acting on the shank are received directly by the carriage through the supporting housing.
An arrangement for mounting and supporting of a shank of a drilling machine comprising a body supported by a carriage, a percussion means mounted in the body, and supporting housing positioned at a front side of the body, and a shank piece mounted in the supporting housing as an axial extension of the percussion means. In order to reduce the strains exerted on tie rods of the body of the drilling machine, the supporting housing of the shank is supported at least partly by the carriage separately from a support between the body and the carriage so that the sideward forces acting on the shank are received directly by the carriage through the supporting housing.
Description
73~ 7 An arrangement for supporting o~ a shank of a drilling machine This invention relates to an arrangement for mounting and supporting of a shank o~ a drilling machine comprising - a body supported by a carriage, - a percussion means mounted in the body, - a supporting housing positioned at a front side of the body, and - a shank mounted rotatably and axially slideably in the supporting housing as an axial extension of the percussion means.
The definition "front" as used herein refers to the drilling direction of the drilling machine and the definition "rear" to the opposite direction.
In conventional hydraulic percussion drilling machines a percussion means mounted in the body is intended to direct successive axial percussions on a shank which, in turn, is intended to be fastened to a drill rod. The shank is mounted rotatably and axially slideably in a supporting housing which is supported by and fastened directly to the body of the drilling machine. The supporting housing may be formed in the front cover of the drilling machine, in a shank flange or in a side flushing housing through which flushing liquid is supplied to the drill rod. The body of the drilling machine is supported by and fastened to a feeding carriage on which the drilling machine is dis-placeable alonga feeding beam of the drilliny equipment.
However, known drilling machines in which the supporting housing of the shank is supported by the body of the drilling machine have certain major disadvantages.
Sideward forces exerted on the shank strain the tie rods '' ' " ': ~
:. ~
:. ' -'. . : .
~29~78~
of the drilling machine by means of which tie rods separate body elements are assembled into one integral body and which tie rods may damage the percussioh -means if they are opened or broken. The sideward forces of the shank also strain and wear the connecting surfaces of the drilling machine, so that the tightening tor~ue of the fastening screws is reduced. There is also a risk that the supporting housing which is supported by the body on one side only will get into a slanting position under the influence of the sideward forces exerted on the shank, so that the piston of the percussion means strikes against a slanted surface of the shank, causing damage in the percussion means and the cogging of the rotation machinery.
The object of the invention is to provide an arrangement for supporting and mounting of the shank, which arrangement avoids the above disadvantages and enables the supporting housing of the shank to be supported in a~appropriate way. This object is achieved by means of an arrangement according to the invention which is characterized in that the supporting housing of the shank is at least partly supported directly by the carriage separately~froma support between the body and the carriage.
The invention is based on the idea that the sideward forces acting on the shank are totally or partly received directly by the carriage, so that they are not transmitted through the body. Due to this the strains exerted on the body are correspondingly reduced or totally avoided. In this way the tie rods of the drilling machine are released from the strains caused by the sideward forces acting on the shank as well as from the strains caused by forces applied for releasing a stuck drill rod. As a result of this the risk that the ~2~7~
tie rods are opened or broken is eliminated and the wear of the connecting surfaces of the drilling machine is avoided. Because the supporting housing of the shank is supported directly by the carriage, the supporting housing will be supported both at the front and at the rear portion thereof or, if required, over the entire axial length thereof. In this way it can be ensured that the accura~e direction of the shank with respect to the percussion means is maintained.
The invention will be described in more detail in the following with reference to the attached drawings, wherein Figure 1 is a partial axial section in a side view of a drilling machine provided with a supporting arrangement according to a first embodiment of the invention, and Figures 2 and 3 illustrate supporting arrangements according to two other embodiments of the invention similarly as in Figure 1.
The drilling machine shown in Figure 1 of the drawings comprises a carriage 1 which is intended to be mounted on a feeding beam of a drilling equipment in a known manner. The carriage supports a body 2 in which a percussion means 3 is mounted. The percussion means comprises an axially displaceable percussion piston 4.
supporting housing 5 for a shank 6 is provided in front of the body as seen in the drilling direction, which housing is mounted rotatably and axially slideably in the supporting housing by means of bearings 7. The shank is positioned on an axial extension of the per-cussion piston, and a rear portion 6a of the shank extends into the body. The shank is in a known manner in engagement with a rotation bushing 8 mounted in the body and rotated by a rotation machinery 9. Tie bolts by 7~6i7 means of which the body is fastened to the carriage are indicated by the reference numeral 10~
The supporting housing is in thisembodiment formed in a side flushing housing which is provided with a connection 11 for supplying of a flushing liquid.
~ ccording to the invention the supporting housing 5 is made integral with the carriage 1 so that in this embodiment the supporting housing and the carriage form one unity. The body is fastened to the carriage at such a point that a small gap 12 is formed between the supporting housing and the body. This gap is sealed by means of a seal 13.
It is noted that the sideward forces acting on the shank as well as the forces required for releasing a stuck drill rod are transmitted directly from the supporting housing to the carriage, so that these forces do not at all strain the body and the tie rods thereof.
Further, the mounting of the shank is very steady, because the supporting housing is stationarily attached to the carriage over the whole length thereof. This ensures that the accurate direction of the shank with respect to the percussion piston is maintained. No connecting surfaces liable to wear need to be provided between the supporting housing and the body, either.
The shank supporting arrangement shown in Figure 2 differs from that shown in Figure 1 mainly only with respect to a supporting housing 15 which is separate from the carriage 1. The supporting housing is provided with a flange 17 which is attached stationarily to the carriage by means of bolts 16.
Also in this embodiment the sideward and the releasing forces acting on the shank are altogether received directly by the carriage, so that they do not strain the body and its tie rods. The supporting housing , , ~ . . .
.
is herein shown without a side flushing housing. The supporting housing is supported by the carriage over the whole length thereof.
The shank supporting arrangement shown in Figure 3 differs from that shown in Figure 2 mainly only with respect to a separate supporting housing 25 which is supported by the carriage 1 only at a point portion 25a thereof. For this purpose the supporting housing is provided with a flange 27 which is attached by means of bolts 26 to a support-28 provided in the carriage.
A rear portion 25b of the supporting housing is supported by the front portion 2a of the body 2 in the axial and the radial direction and is attached to the body stationarily by means of bolts 29. In this embodiment, too, a major part of the sideward and releasing forces acting on the shank can be transmitted through the support 28 at the front portion directly to the carriage so that the forces do not act on the body in spite of the fact that the rear portion of the supporting housing is supported by the body. Since the supporting housing is supported by the carriage at the front portion thereof and by the body at the rear portion, the fastening of the supporting housing is very steady, so that the shank maintains reliably its axial direction with respect to the percussion piston.
The drawings and the description related thereto are only intended to illustrate the idea of the inven-tion. In its details the arrangement according to the invention may vary within the scope of the claims.
~, , , ,
The definition "front" as used herein refers to the drilling direction of the drilling machine and the definition "rear" to the opposite direction.
In conventional hydraulic percussion drilling machines a percussion means mounted in the body is intended to direct successive axial percussions on a shank which, in turn, is intended to be fastened to a drill rod. The shank is mounted rotatably and axially slideably in a supporting housing which is supported by and fastened directly to the body of the drilling machine. The supporting housing may be formed in the front cover of the drilling machine, in a shank flange or in a side flushing housing through which flushing liquid is supplied to the drill rod. The body of the drilling machine is supported by and fastened to a feeding carriage on which the drilling machine is dis-placeable alonga feeding beam of the drilliny equipment.
However, known drilling machines in which the supporting housing of the shank is supported by the body of the drilling machine have certain major disadvantages.
Sideward forces exerted on the shank strain the tie rods '' ' " ': ~
:. ~
:. ' -'. . : .
~29~78~
of the drilling machine by means of which tie rods separate body elements are assembled into one integral body and which tie rods may damage the percussioh -means if they are opened or broken. The sideward forces of the shank also strain and wear the connecting surfaces of the drilling machine, so that the tightening tor~ue of the fastening screws is reduced. There is also a risk that the supporting housing which is supported by the body on one side only will get into a slanting position under the influence of the sideward forces exerted on the shank, so that the piston of the percussion means strikes against a slanted surface of the shank, causing damage in the percussion means and the cogging of the rotation machinery.
The object of the invention is to provide an arrangement for supporting and mounting of the shank, which arrangement avoids the above disadvantages and enables the supporting housing of the shank to be supported in a~appropriate way. This object is achieved by means of an arrangement according to the invention which is characterized in that the supporting housing of the shank is at least partly supported directly by the carriage separately~froma support between the body and the carriage.
The invention is based on the idea that the sideward forces acting on the shank are totally or partly received directly by the carriage, so that they are not transmitted through the body. Due to this the strains exerted on the body are correspondingly reduced or totally avoided. In this way the tie rods of the drilling machine are released from the strains caused by the sideward forces acting on the shank as well as from the strains caused by forces applied for releasing a stuck drill rod. As a result of this the risk that the ~2~7~
tie rods are opened or broken is eliminated and the wear of the connecting surfaces of the drilling machine is avoided. Because the supporting housing of the shank is supported directly by the carriage, the supporting housing will be supported both at the front and at the rear portion thereof or, if required, over the entire axial length thereof. In this way it can be ensured that the accura~e direction of the shank with respect to the percussion means is maintained.
The invention will be described in more detail in the following with reference to the attached drawings, wherein Figure 1 is a partial axial section in a side view of a drilling machine provided with a supporting arrangement according to a first embodiment of the invention, and Figures 2 and 3 illustrate supporting arrangements according to two other embodiments of the invention similarly as in Figure 1.
The drilling machine shown in Figure 1 of the drawings comprises a carriage 1 which is intended to be mounted on a feeding beam of a drilling equipment in a known manner. The carriage supports a body 2 in which a percussion means 3 is mounted. The percussion means comprises an axially displaceable percussion piston 4.
supporting housing 5 for a shank 6 is provided in front of the body as seen in the drilling direction, which housing is mounted rotatably and axially slideably in the supporting housing by means of bearings 7. The shank is positioned on an axial extension of the per-cussion piston, and a rear portion 6a of the shank extends into the body. The shank is in a known manner in engagement with a rotation bushing 8 mounted in the body and rotated by a rotation machinery 9. Tie bolts by 7~6i7 means of which the body is fastened to the carriage are indicated by the reference numeral 10~
The supporting housing is in thisembodiment formed in a side flushing housing which is provided with a connection 11 for supplying of a flushing liquid.
~ ccording to the invention the supporting housing 5 is made integral with the carriage 1 so that in this embodiment the supporting housing and the carriage form one unity. The body is fastened to the carriage at such a point that a small gap 12 is formed between the supporting housing and the body. This gap is sealed by means of a seal 13.
It is noted that the sideward forces acting on the shank as well as the forces required for releasing a stuck drill rod are transmitted directly from the supporting housing to the carriage, so that these forces do not at all strain the body and the tie rods thereof.
Further, the mounting of the shank is very steady, because the supporting housing is stationarily attached to the carriage over the whole length thereof. This ensures that the accurate direction of the shank with respect to the percussion piston is maintained. No connecting surfaces liable to wear need to be provided between the supporting housing and the body, either.
The shank supporting arrangement shown in Figure 2 differs from that shown in Figure 1 mainly only with respect to a supporting housing 15 which is separate from the carriage 1. The supporting housing is provided with a flange 17 which is attached stationarily to the carriage by means of bolts 16.
Also in this embodiment the sideward and the releasing forces acting on the shank are altogether received directly by the carriage, so that they do not strain the body and its tie rods. The supporting housing , , ~ . . .
.
is herein shown without a side flushing housing. The supporting housing is supported by the carriage over the whole length thereof.
The shank supporting arrangement shown in Figure 3 differs from that shown in Figure 2 mainly only with respect to a separate supporting housing 25 which is supported by the carriage 1 only at a point portion 25a thereof. For this purpose the supporting housing is provided with a flange 27 which is attached by means of bolts 26 to a support-28 provided in the carriage.
A rear portion 25b of the supporting housing is supported by the front portion 2a of the body 2 in the axial and the radial direction and is attached to the body stationarily by means of bolts 29. In this embodiment, too, a major part of the sideward and releasing forces acting on the shank can be transmitted through the support 28 at the front portion directly to the carriage so that the forces do not act on the body in spite of the fact that the rear portion of the supporting housing is supported by the body. Since the supporting housing is supported by the carriage at the front portion thereof and by the body at the rear portion, the fastening of the supporting housing is very steady, so that the shank maintains reliably its axial direction with respect to the percussion piston.
The drawings and the description related thereto are only intended to illustrate the idea of the inven-tion. In its details the arrangement according to the invention may vary within the scope of the claims.
~, , , ,
Claims (7)
1. An arrangement for mounting and supporting a shank of a drilling machine comprising:
a body supported by a carriage;
a percussion means mounted in the body;
a supporting housing positioned at a front side of the body; and a shank mounted rotatably and axially slidably in the supporting housing as an axial extension of the percussion means;
characterized in that the supporting housing of the shank is at least partly supported directly by the carriage separately from a support between the body and the carriage.
a body supported by a carriage;
a percussion means mounted in the body;
a supporting housing positioned at a front side of the body; and a shank mounted rotatably and axially slidably in the supporting housing as an axial extension of the percussion means;
characterized in that the supporting housing of the shank is at least partly supported directly by the carriage separately from a support between the body and the carriage.
2. An arrangement according to claim 1 characterized in that the supporting housing is integral with the carriage.
3. An arrangement according to claim 1 characterized in that the supporting housing is a separate part fastened to the carriage by a first fastening means.
4. An arrangement according to claim 1 characterized in that the supporting housing is at a front portion thereof attached to the carriage by means of a first fastening means and at a rear portion thereof to the body by a second fastening means.
5. An arrangement according to claim 2 or 3 characterized in that the supporting housing is positioned at an axial distance from the body.
6. An arrangement according to claim 2 or 3 characterized in that the supporting housing is formed by a side flushing housing.
7. An arrangement according to claim 2 or 3 characterized in that the shank projects from a rear end of the supporting housing and extends into the body provided with the percussion means.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI861940A FI83691C (en) | 1986-05-09 | 1986-05-09 | Headrest support device in a drill |
| FI861940 | 1986-05-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1297867C true CA1297867C (en) | 1992-03-24 |
Family
ID=8522594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000535680A Expired - Lifetime CA1297867C (en) | 1986-05-09 | 1987-04-27 | Arrangement for supporting of a shank of a drilling machine |
Country Status (13)
| Country | Link |
|---|---|
| US (1) | US4854394A (en) |
| JP (1) | JPH0686790B2 (en) |
| CN (1) | CN1008194B (en) |
| AT (1) | AT396079B (en) |
| AU (1) | AU586558B2 (en) |
| CA (1) | CA1297867C (en) |
| CH (1) | CH671915A5 (en) |
| DE (1) | DE3714499C2 (en) |
| FI (1) | FI83691C (en) |
| FR (1) | FR2598461B1 (en) |
| GB (1) | GB2190032B (en) |
| SE (1) | SE468825B (en) |
| ZA (1) | ZA872983B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4103196C2 (en) * | 1991-02-02 | 1994-06-09 | Tracto Technik | Drill |
| ZA932778B (en) * | 1993-04-21 | 1994-09-30 | Jarmo Uolevi Leppaenen | Rock drill |
| FI102202B1 (en) * | 1997-03-21 | 1998-10-30 | Tamrock Oy | An arrangement in a rock drilling machine and a method for controlling rock drilling |
| US7967084B2 (en) * | 2008-09-05 | 2011-06-28 | Longyear Tm, Inc. | External water delivery system for rock drills |
| CN102808598A (en) * | 2011-05-31 | 2012-12-05 | 苏州工业园区科艺通信设备有限公司 | Washing machine of drill rod sleeve |
| SE537720C2 (en) * | 2012-11-21 | 2015-10-06 | Atlas Copco Rock Drills Ab | Device at a bobbin head for a rock drill and rock drill |
| US20140262395A1 (en) * | 2013-03-12 | 2014-09-18 | Caterpillar Global Mining Equipment LLC. | Drilling apparatus |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1918065A (en) * | 1931-07-30 | 1933-07-11 | Ingersoll Rand Co | Rock drill |
| GB516507A (en) * | 1938-07-26 | 1940-01-03 | Holman Brothers Ltd | Improvements in and relating to rock and like drills |
| DE1217307B (en) * | 1963-01-11 | 1966-05-26 | Rudolf Hausherr & Soehne G M B | Device for regulating the feed speed of rock drilling machines with countersink hammers |
| GB1031009A (en) * | 1964-05-04 | 1966-05-25 | Atlas Copco Ab | Improvements in drill steel centralizers |
| US3620312A (en) * | 1969-05-22 | 1971-11-16 | Ingersoll Rand Co | Rock drill |
| US3685593A (en) * | 1970-11-03 | 1972-08-22 | Chicago Pneumatic Tool Co | Fluid operated rock drill having an independent rotation motor |
| US3701386A (en) * | 1970-12-11 | 1972-10-31 | Dresser Ind | Hydraulic drifter |
| US3757875A (en) * | 1971-11-24 | 1973-09-11 | Kent Air Tool Co | Air hammer and combined support and muffler therefor |
| US3760887A (en) * | 1972-08-18 | 1973-09-25 | Gardner Denver Co | Reversible piston hammer for percussion tool |
| ZA752698B (en) * | 1975-04-25 | 1976-12-29 | Boart Int Ltd | Improvements in rock slotting equipment |
| SU899902A1 (en) * | 1975-12-15 | 1982-01-23 | Предприятие П/Я М-5903 | Rotating unit of drilling machine |
| SE423253B (en) * | 1976-11-04 | 1982-04-26 | Atlas Copco Ab | Rock drilling equipment |
| JPS5859886U (en) * | 1981-10-19 | 1983-04-22 | 株式会社小松製作所 | drifter device |
| FI66052C (en) * | 1982-07-07 | 1984-08-10 | Tampella Oy Ab | OEPPNINGSANORDNING FOER EN BORRSTAONG FOER ETT AGGREGAT FOER SKARVSTAONGSBORRNING |
-
1986
- 1986-05-09 FI FI861940A patent/FI83691C/en not_active IP Right Cessation
-
1987
- 1987-04-23 AT AT0100487A patent/AT396079B/en not_active IP Right Cessation
- 1987-04-27 ZA ZA872983A patent/ZA872983B/en unknown
- 1987-04-27 US US07/043,162 patent/US4854394A/en not_active Expired - Fee Related
- 1987-04-27 CA CA000535680A patent/CA1297867C/en not_active Expired - Lifetime
- 1987-04-28 GB GB8710023A patent/GB2190032B/en not_active Expired
- 1987-04-28 AU AU72137/87A patent/AU586558B2/en not_active Ceased
- 1987-04-30 DE DE3714499A patent/DE3714499C2/en not_active Expired - Fee Related
- 1987-05-07 FR FR878706492A patent/FR2598461B1/en not_active Expired - Lifetime
- 1987-05-08 SE SE8701894A patent/SE468825B/en not_active IP Right Cessation
- 1987-05-08 CH CH1760/87A patent/CH671915A5/de not_active IP Right Cessation
- 1987-05-08 JP JP62110919A patent/JPH0686790B2/en not_active Expired - Lifetime
- 1987-05-09 CN CN87104315A patent/CN1008194B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB2190032B (en) | 1989-11-29 |
| DE3714499C2 (en) | 1996-09-19 |
| FR2598461B1 (en) | 1990-10-26 |
| FI83691B (en) | 1991-04-30 |
| CN1008194B (en) | 1990-05-30 |
| FR2598461A1 (en) | 1987-11-13 |
| US4854394A (en) | 1989-08-08 |
| SE468825B (en) | 1993-03-22 |
| GB8710023D0 (en) | 1987-06-03 |
| AU7213787A (en) | 1987-11-12 |
| ATA100487A (en) | 1992-10-15 |
| SE8701894D0 (en) | 1987-05-08 |
| FI83691C (en) | 1991-08-12 |
| ZA872983B (en) | 1987-10-20 |
| FI861940A (en) | 1987-11-10 |
| CN87104315A (en) | 1987-12-16 |
| AT396079B (en) | 1993-05-25 |
| AU586558B2 (en) | 1989-07-13 |
| SE8701894L (en) | 1987-11-10 |
| JPH0686790B2 (en) | 1994-11-02 |
| JPS62288290A (en) | 1987-12-15 |
| DE3714499A1 (en) | 1987-11-12 |
| CH671915A5 (en) | 1989-10-13 |
| FI861940A0 (en) | 1986-05-09 |
| GB2190032A (en) | 1987-11-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |